Testing Aldehydes & Ketones (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the primary purpose of Tollens' reagent?
What is the primary purpose of Tollens' reagent?
To distinguish aldehydes from ketones
What product is formed when an aldehyde reacts with Tollens' reagent?
What product is formed when an aldehyde reacts with Tollens' reagent?
Carboxylic acid
Why do ketones not react with Tollens' reagent?
Why do ketones not react with Tollens' reagent?
Cannot be oxidised by weak oxidisers
Which ion is present in Tollens' reagent?
Which ion is present in Tollens' reagent?
What is the positive test result for an aldehyde with Tollens' reagent?
What is the positive test result for an aldehyde with Tollens' reagent?
Silver mirror forms
What happens to silver(I) ions when an aldehyde is oxidised?
What happens to silver(I) ions when an aldehyde is oxidised?
Reduced to solid metallic silver
What is the brown precipitate formed when sodium hydroxide is added to silver nitrate?
What is the brown precipitate formed when sodium hydroxide is added to silver nitrate?
Silver(I) oxide
What observation indicates a negative test result for ketones?
What observation indicates a negative test result for ketones?
No silver mirror forms
Why must Tollens' reagent be disposed of carefully after use?
Why must Tollens' reagent be disposed of carefully after use?
Can form explosive silver compounds
Why is very clean glassware essential for the Tollens' test?
Why is very clean glassware essential for the Tollens' test?
Ensures accurate results